练一练：

1. -I don't suppose the police know who did it.

-Well, surprisingly they do. A man has been arrested and ____now.

A. has being questioned　

B. is questioning

C. has questioned　　

D. is being questioned

2. A new cinema _____ here. They hope to finish it next month.

A. will be built

B. is built

C. has been built

D. is being built

3. Selecting a mobile phone for personal use is no easy task because technology _____ so rapidly.

A. is changing

B. has changed

C. will have changed

D. will change

4. Rainforests _____ and burned at near future.

A. cut B. are cut

C. are being cut D. had been cut

5. I don't know what time it is now. My watch _____ . A. is repairing

B. has been repaired

C. is being repaired

D. has repaired

6. It is said that pandas _____ in our country year after year.

A. are being disappeared

B. are disappearing